S55.011A (Laceration of ulnar artery at forearm level, right arm, initial encounter) compared with S55.012A (Laceration of ulnar artery at forearm level, left arm, initial encounter), from the official CMS tabular data. S55.011A and S55.012A code the same condition on opposite sides.
Same condition; these differ only in which side is documented.
These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.
Source: ICD-10-CM tabular list (laterality variant derived from the code title)
Same condition, opposite side. S55.011A and S55.012A name the same condition on opposite sides of the body.
Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.
| S55.011ALaceration of ulnar artery at forearm level, right arm, initial encounter | S55.012ALaceration of ulnar artery at forearm level, left arm, initial encounter | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Laceration of ulnar artery at forearm level, right arm, initial encounter is a billable ICD-10-CM diagnosis code (S55.011A). | Laceration of ulnar artery at forearm level, left arm, initial encounter is a billable ICD-10-CM diagnosis code (S55.012A). |
| 7th character | The appropriate 7th character is to be added to each code from category S55 | The appropriate 7th character is to be added to each code from category S55 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources